Conditions for Setting the DTC
WARNING: This page is about a different car, the 2009 GMC Sierra and 2009 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- The ECM detects resistance greater than 2 Ω on the low reference circuit.
- The ECM detects that the CMP Angle position is more than 6 degrees difference than the Desired CMP position.